题干
Realizing that everything she said had no effect on her son, __________.
| A．her son’s teacher was asked to help solve the problem. |
| B．it was decided that her son’s teacher should help solve the problem. |
| C．She had to ask her son’s teacher to help solve the problem |
| D．there’s nothing she can do but ask her son’s teacher to help solve the problem. |
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